Collimating LED light

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3 responses to “Collimating LED light”

1. 

   January 5, 2013

   Pariksheet Nanda

   I wonder how one could mathematically derive the ~17 fold increase gained using the collimator here instead of brute feeding the software a million ray traces. But given that the LED intensity has a square and circular shape (figure 5 in the article with the blue to red lookup table) the 3D luminosity polar plot would probably make that theoretical analysis difficult.

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   1. 

      January 8, 2013

      Austin

      Good question! Possibly some limitation in ZEMAX?

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2. 

   January 5, 2013

   Pariksheet Nanda

   This explains why bicycle tail lights with parabolic mirrors are so blindingly bright!

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